Questions and answers about English usage

Capitals in Titles

Don writes:I found some general rules but still unsure of these titles;

Steady As a Train, "As" or "as"
Steady As the Sun, "As"...
Our Castle Is Our Home, "Is" or "is"
There Can Be No Other or "There can be no Other"
You Are my Fountian or "You are my Fountain"
A Walk On the Beach or "A Walk on the Beach"

The general rule for "title case" is to capitalize the main words (first word, verbs, adverbs, nouns, pronouns, adjectives) and prepositions with four or more letters. So in the examples you mention, I'd write:
Steady As a Train (first word, adverb, article, noun)
Our Castle Is Our Home (pronoun, noun, verb, pronoun, noun)
There Can Be No Other (first word, verb, adverb, adjective)
You Are My Fountain (first word, verb, pronoun, noun)
A Walk on the Beach (first word, noun, two-letter preposition, article, noun)